expressie insecten Flashcards

1
Q

voordelen

A

goedkoper dan zoogdier
splicing & PTM
opvouwmech EW = zoogdier

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2
Q

nadelen

A

splicing =/= zoogdier
PTM =/= zoogdier
expressieniveau lager dan gist

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3
Q

baculovirussysteem

A

insectpathogeen, supercoil
infmech dsDNA binnenbrengen
- occluded virus (OV)
> 20u na inf
> polyhedrine aanmaak (virus in poly. netwerk), sterke prom
> zeer late fase = occluded viral phase
> hoekige plaques
- non-occluded virus (NOV) = budding virus
> 12u na inf (geen polyhedrine)
> ronde kleine plaque

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4
Q

methode 1 GOI inbrengen

A
  • transfer vec
    > shuttle (P polyhedrine prom)
    > GOI sterk tot expressie
    > Z polyhedrine in verpakkingcel
  • packaging cell
    > rec transfer vec + viraal genoom = rec baculovirussen
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5
Q

methode 2 GOI inbrengen

A
  • transfer vec
    > flankerende virale DNA voor homologe rec (rec baculo + polyhedrine prom)
    > co-transfectie GOI & virale fragmenten in insectenverpakking
  • binnen lineair viraal DNA
    > truncated essentieel gen
    > niet functioneel
  • homologe rec met aangeleverde transfer vec
    > verkort fragment <-> gwn gen cirkel viraal genoom
    (seq hersteld)
  • in cellen -> detectie plaques (bleu/white)
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